Laravel Eloquent: sum with groupBy

Question

Need eloquent/fluent query to get sum with groupBy function.

So far I have tried:

    $this->data['no_of_pages'] = Document::sum('no_of_pages')
                                ->groupBy('users_editor_id');

Which ofcourse gives me call to member function groupBy() on non-object because of the fact that sum() will already execute the query and have result ready by the time grouBy() is applied. So can anyone guide me?

Answer 1

Document::groupBy('users_editor_id')
   ->selectRaw('sum(no_of_pages) as sum, users_editor_id')
   ->pluck('sum','users_editor_id');

   // originally lists(), which was deprecated in favour of pluck in 5.2
   // and dropped completely in 5.3
   // ->lists('sum','users_editor_id');


// returns array like this:
array(
  users_editor_id => sum,
  ...
)

Or this way (which I wouldn't use, since it won't be actual ORM result):

Document::groupBy('users_editor_id')
   ->selectRaw('*, sum(no_of_pages) as sum')
   ->get();

// returns collection of Document pseudo models with additional sum field

Answer 2

Document::Where('some_condition',true)
   ->select([DB::raw("SUM(debit) as total_debit"), DB::raw("SUM(credit) as total_credit")])
   ->groupBy('id')
   ->get()

Answer 3

Little bit refactored and convenient answer is (from @keroles Monsef)

Document::Where('some_condition',true)
    ->selectRaw("SUM(debit) as total_debit")
    ->selectRaw("SUM(credit) as total_credit")
    ->groupBy('id')
    ->get();